Results 91 to 100 of about 2,950 (201)

Rack-and-pinion effects in molecular rolling friction

, 2008
Rolling lubrication with spherical molecules working as 'nanobearings' has failed experimentally so far, without a full understanding of the physics involved and of the reasons why.
Braun OM, Drexler KE, Erio Tosatti, Feynman RP, Oleg M. Braun, Persson BNJ   +5 more
core   +1 more source

Inhomogeneous Nanoscale Conductivity and Friction on Graphite Terraces Explored via Atomic Force Microscopy

Lubricants
The interplay of conductivity and friction in layered materials such as graphite is an open area of investigation. Here, we measure local conductivity and friction on terraces of freshly cleaved highly oriented pyrolytic graphite via atomic force ...
A. Kutay Ozyurt, Mehmet Z. Baykara
doaj   +1 more source

Friction at Atomic-Scale Surface Steps: Experiment and Theory

, 2008
Experiments performed by friction force microscopy at atomic-scale surface steps on graphite, MoS$_2$, and NaCl in ambient conditions are presented. Both step-down and step-up scans exhibit higher frictional forces at the edge, but distinguish in their ...
Ebeling, Daniel, Holscher, Hendrik, Schwarz, Udo D.   +2 more
core   +1 more source

Atomistic modeling of tribological properties of Pd and Al nanoparticles on a graphene surface

Beilstein Journal of Nanotechnology, 2018
Background: The frictional properties of nanoparticles have been studied to gain insight into the fundamental origin of sliding friction.Results: Using molecular dynamics we investigate frictional properties of aluminum and palladium nanoparticles ...
Alexei Khomenko, Miroslav Zakharov, Denis Boyko, Bo N. J. Persson   +3 more
doaj   +1 more source

Evolution of Non-Equilibrium Profile in Adsorbate Layer under Compressive Strain

, 2012
We investigate the time evolution of an initial step profile separating a bare substrate region from the rest of the compressively strained adsorbate layer near a commensurate to incommensurate transition.
A.T. Loburets, B.N.J. Persson, B.N.J. Persson, E. Granato, E. Granato, Enzo Granato, F.C. Frank, K.L. Man, L.M. Floria, Li Huang, M. Peyard, M.C. Tringides, M.P. Allen, S. C. Ying, S.N. Coppersmith, V.L. Pokrovsky   +15 more
core   +1 more source

Stick–slip behaviour on Au(111) with adsorption of copper and sulfate

Beilstein Journal of Nanotechnology, 2015
Several transitions in the friction coefficient with increasing load are found on Au(111) in sulfuric acid electrolyte containing Cu ions when a monolayer (or submonolayer) of Cu is adsorbed.
Nikolay Podgaynyy, Sabine Wezisla, Christoph Molls, Shahid Iqbal, Helmut Baltruschat   +4 more
doaj   +1 more source

Tribological behaviour of the low and high viscosity peek at various testing scales [PDF]

, 2012
Polyetheretherketone (PEEK) has become most attractive as a sliding bearing material in industrial applications, due to its excellent thermal stability, good friction and wear resistance. These properties promote the material to be used in so called high
De Baets, Patrick, Fernandez, Beatriz, Igartua, Amaia, Perez Delgado, Yeczain, Rodriguez Fereira, Vanessa, Schlarb, Alois K, Sukumaran, Jacob   +6 more
core  

On the connection between sliding friction and phonon lifetimes: Thermostat induced thermolubricity effects in molecular dynamics simulations

, 2019
A typical nanotribology simulation setup is the semi-infinite substrate, featuring a sliding bead on top, and with the lower substrate layers thermostatted to control temperature.
Vink, Richard L. C.
core   +1 more source

Fundamental Mechanisms Underlying the Effectiveness of Nanoparticle Additives to Lubricants: 25 Examples Linking Nano- to Macroscale Friction

Lubricants
Studies of the fundamental origins of friction have undergone rapid acceleration in recent years by providing valuable information on the nanoscale mechanisms responsible for friction at the macroscopic level.
Jacqueline Krim, Alex I. Smirnov
doaj   +1 more source

Atomic Friction Processes of Two-Dimensional Materials. [PDF]

Langmuir, 2023
Song Y, Meyer E.
europepmc   +1 more source